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Description
Oil Pressure Sender – Fits Volvo Penta & MerCruiser 3.0L, 4.3L, 5.0L, 5.7L (Replaces 815425T, 8M0068784, 3857532)Oil Pressure Sender Fits Volvo Penta & MerCruiser 3. 0L, 4. 3L, 5. 0L, 5. 7L This oil pressure sender provides a reliable replacement for specific Volvo Penta and MerCruiser gasoline sterndrive engines. It is designed to fit a wide range of 3. 0L, 4. 3L, 5. 0L, and 5. 7L models, sending accurate pressure data to your dashboard gauge. This sender is a direct replacement for MerCruiser part numbers 815425T and 8M0068784, Volvo Penta part number 3857532,
Oil Pressure Sender – Fits Volvo Penta & MerCruiser 3.0L, 4.3L, 5.0L, 5.7L
This oil pressure sender provides a reliable replacement for specific Volvo Penta and MerCruiser gasoline sterndrive engines. It is designed to fit a wide range of 3.0L, 4.3L, 5.0L, and 5.7L models, sending accurate pressure data to your dashboard gauge.
This sender is a direct replacement for MerCruiser part numbers 815425T and 8M0068784, Volvo Penta part number 3857532, and Sierra part number 18-5899.
- Installation Type: Direct fit, screw-in
- Fuel Compatibility: Gasoline
- Connection: Single-wire (1-wire) electrical connector
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| MerCruiser | 815425T |
| MerCruiser | 8M0068784 |
| Volvo Penta | 3857532 |
| Sierra | 18-5899 |
Compatible Engine Models
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| MerCruiser | 3.0L | Various | 4-Stroke | 815425T/8M0068784 |
| MerCruiser | 4.3L | Various | 4-Stroke | 815425T/8M0068784 |
| MerCruiser | 5.0L | Various | 4-Stroke | 815425T/8M0068784 |
| MerCruiser | 5.7L | Various | 4-Stroke | 815425T/8M0068784 |
| Volvo Penta | 3.0L | Various | 4-Stroke | 3857532 |
| Volvo Penta | 4.3L | Various | 4-Stroke | 3857532 |
| Volvo Penta | 5.0L | Various | 4-Stroke | 3857532 |
| Volvo Penta | 5.7L | Various | 4-Stroke | 3857532 |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Oil Pressure Sender/Sensor |
| Installation | Direct fit, screw-in |
| Fuel Type | Gasoline |
| Connection | 1-wire electrical connector |
| Fitting Type | NPT thread |
| Thread Size | 1/8" NPT |
| Working Pressure | 0-100 PSI |
| Other Technical Attributes | Provides data to oil pressure gauge on dashboard |
Package Contents
1 x Oil Pressure Sender/Sensor (Replaces 815425T, 8M0068784, 3857532)
Installation Guide
- Safety First: Disconnect the boat's battery before beginning work.
- Locate the Sender: Find the existing oil pressure sender on the engine block. It is often located near the oil filter or the distributor.
- Disconnect Wire: Carefully detach the single electrical wire from the top of the old sender.
- Remove Old Sender: Using an appropriately sized wrench, unscrew and remove the old sender from the engine block. Be prepared for minor oil spillage.
- Prepare New Sender: Apply a suitable pipe thread sealant to the threads of the new sender to prevent leaks. Do not overtighten.
- Install New Sender: Screw the new sender into the engine block and tighten it securely.
- Reconnect Wire: Attach the electrical wire to the terminal on the new sender.
- Final Check: Reconnect the battery. Start the engine and carefully check for any oil leaks around the new sender. Verify that the oil pressure gauge on your dashboard is providing a reading.
Troubleshooting & FAQ
- Q: How do I confirm this will fit my engine?
- A: The best way to ensure compatibility is to match your existing part number to the cross-reference list: MerCruiser 815425T/8M0068784, Volvo Penta 3857532, or Sierra 18-5899. Also, check the compatible engine models table. Visually comparing your old part to our product images is also recommended.
- Q: What are common signs of a failing oil pressure sender?
- A: Symptoms include an oil pressure gauge that reads zero, is pegged at maximum, or fluctuates erratically. An engine warning light may also illuminate. These signs indicate that the sender is no longer providing accurate data to the gauge.
- Q: Where is this sender typically located?
- A: On most compatible MerCruiser and Volvo Penta engines, the oil pressure sender is found screwed into the engine block, often near the oil filter housing or close to the distributor.
- Q: OEM vs. Aftermarket?
- A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
- Q: How fast do you ship and how much does it cost?
- A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
- Q: What is your warranty and return policy?
- A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
- Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
- Fast Global Shipping: Free delivery worldwide in 5–15 days.
- Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 4
Omegaverse with rival families.
Format: Kindle
Tatum is trying to raise enough money to treat her omega mother who has fallen catatonic due to the death of her mate. To make the money she needs she agrees to work at a gentleman's club scantily dressed. There she meets the twin Hayes brothers, Declan and Kodiak, what she doesn't know is that their younger half brother is the high school sweetheart that ghosted her after helping with her first heat. Tatum also meets Easton, the mysterious male omega that pops into her life but she finds herself strongly attracted to.
I enjoyed all the characters, even those that were not major characters, the plot was good, the storyline was well done. I would recommend this book if you liked Omegaverse stories, mafia storylines, and good romance with why choose.
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Reviewed in the United States on March 1, 2025
★★★★★ 5
Addicting!
Format: Kindle
I could not stop reading. It was so refreshing to have a series start so completely different than most fated mates/fantasy academy rh I’ve been reading. From the desert scenery to the magic and feeding plus the psychological trauma the characters are there to deal with. Pandora is absolutely adorable and I totally relate to hiding behind my hair. I love that she’s literally the most scary type of demon but it’s not the usual “badass mc” persona (which I do love a badass that can fend for herself and kick ass from the start but it was a nice change of pace). I’m not usually a big fan of bully within the harem but each character has their reasons for their actions and also conflicting feelings about them. I adore Dex and Reed! Complete opposites but their personalities and inner monologues made them instant favs. I can’t wait to see the character growth with the guys and continued strength for Pandora.
The captivating characters and references to the Fate Hallow series added so much depth and now I need another reread while I wait for book 2. The concept of magic and the unique feeding habits of the demon characters were intriguing. I can't wait for the next book to continue this thrilling journey.
In summary, this book is a must-read for fantasy and magic academy rh fans. With its enchanting characters, nods to the Fate Hallow series, and imaginative concepts, it offers an immersive reading experience that hwill leave you craving for more.
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Reviewed in the United States on June 5, 2024
★★★★★ 4
Best academy I've read this year
Format: Kindle
I need a few things when it comes to a first book of a PNR romance series
1-Good world building (which this totally did)
2-An FMC I can root for (oh hell yes, Pandora is someone I can cheer for)
3-Good drama (can you say GROVEL BOYS!)
4-Enough story to make you feel like you really read something with meat (you saw this book is like 600 pages, yeah?)
5-A hook at the end so I want more! (please, Lyra, gimmie more?!? I need more!!)
Be aware this book is a slow burn, but damn do I feel like there'll be some big payoff when it finally happens. Who doesn't like the buildup?
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Reviewed in the United States on June 4, 2024
★★★★★ 5
Pandora’s Pain, Power, and Passion
Format: Kindle
I absolutely love this new world Lyra Winters has created! The spin on a Demon Academy setting was fresh, unique, and completely addictive.
Pandora is a character who immediately captured my heart. Thought to be powerless and enduring years of brutal abuse from her mother, it’s no surprise that her powers emerge at the exact moment she needs them most. After her mother’s death, Pandora discovers her father is none other than Death himself, a soul eater with a dark legacy. Her journey at the academy is anything but easy, filled with challenges tied to her father’s infamous reputation, her barely controlled abilities, and the cruelty of those around her.
Pandora is easy to root for, you feel every ounce of her pain, resilience, and growth. Along the way she meets Reed, a half-human dream demon who’s kind, steady, and the kind of friend everyone wishes they had. There’s also Hunter, a vengeance demon and counselor connected to her father, who adds another intriguing layer to her story. Then there are the bullies: Dexter, a brooding shadow demon; Bram, a chaos demon with a drinking problem and deep hatred for demon nobility; and Skel, a fear demon wrestling with his own darkness. They might hurt her, but they also can’t seem to stay away when she’s in danger, making for some deliciously complicated dynamics.
This book hits so many of my favorite tropes: friends to lovers, enemies to lovers, and of course, the irresistible “who hurt you?” storyline. I devoured it, and I’m already diving straight into book two!
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Reviewed in the United States on September 4, 2025
★★★★★ 5
So good!
Format: Kindle
Oh my goodness! What did I just read? Lyra Winters you have some serious explaining to do! That cliffhanger killed me! I am so happy to be back in the world of Kalista. This is definitely darker than Fates Hollow but oh so good. This is a fated mates reverse harem which I absolutely love.
Pandora had a very hard and rough upbringing. She lives in pain constantly and it makes it hard on her. She struggles with everything because she was kept so isolated and is new to her magic. Pandora gets sent to the Reform Academy and all of them have reasons why they are there. I love how, after everything she has been through, she is still a nice person. She is growing and becoming stronger too. Love her character.
The guys all act like jerks at first but all have a back story that helps understand why even though want to smack them. I'm here for the groveling that I'm sure will come. I love them all. They each bring something for her. They are all drawn to her though.
This is a slow burn book but there will be more books in the series so sure it will build. Man, that cliffhanger was a doozy and need book 2 now!
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Reviewed in the United States on June 3, 2024